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First Alert CO400 Battery Powered Carbon Monoxide Detector: 9-Volt CO Alarm, Silences Unwanted Alarms, 7-Year Warranty
$16.49 when purchased online
Target Online store #3991
About this item
Highlights
- Keep your family safe with this easy to use, battery operated carbon monoxide alarm; battery powered alarms provide continuous monitoring of CO levels, even if there's a power failure
- Features an advanced electrochemical carbon monoxide sensor that accurately detects carbon monoxide levels, no matter where the detector is placed in the room
- A loud 85-decibel alarm sounds when CO levels reach dangerous levels
- To ensure complete protection make sure to place one on each level of your home and in each bedroom
- 5-7 year limited warranty; equipped with end-of-life signal chirp, so you know when it's time to replace the unit for safety
- All First Alert CO alarms are rigorously tested to meet UL standards
Description
The First Alert CO400 Carbon Monoxide Alarm utilizes an electrochemical carbon monoxide sensor to monitor your space for a carbon monoxide threat. The battery-powered design doesn't require an electrician; simply insert the included 9-volt battery, and the carbon monoxide detector is ready to go.
The advanced electrochemical CO sensor detects carbon monoxide leaks from multiple sources, such as faulty fuel-burning appliances, blocked chimneys, and generators running inside or too close to homes. When CO levels become elevated, a loud 85-decibel alarm alerts you to the threat.
Because CO evenly distributes itself, it's important to have a CO detector on every level and in every bedroom of your home. Designed to be simple to use, the CO detector has just one button that silences or tests the unit, as well as an end-of-life timer that lets you know when it's time to replace the device.
The advanced electrochemical CO sensor detects carbon monoxide leaks from multiple sources, such as faulty fuel-burning appliances, blocked chimneys, and generators running inside or too close to homes. When CO levels become elevated, a loud 85-decibel alarm alerts you to the threat.
Because CO evenly distributes itself, it's important to have a CO detector on every level and in every bedroom of your home. Designed to be simple to use, the CO detector has just one button that silences or tests the unit, as well as an end-of-life timer that lets you know when it's time to replace the device.
Dimensions (Overall): 3.38 Inches (H) x 4.87 Inches (W) x 1.56 Inches (D)
Weight: .45 Pounds
Features: Silences Unwanted Alarms
Package Quantity: 1
Requires Hardwired Installation: No
Battery: 1 9-Volt Alkaline, Required, Included
Warranty: 7 Year Limited Warranty. To obtain a copy of the manufacturer's or supplier's warranty for this item prior to purchasing the item, please call Target Guest Services at 1-800-591-3869
TCIN: 11134898
UPC: 029054013101
Item Number (DPCI): 085-14-0248
Origin: Imported
If the item details above aren’t accurate or complete, we want to know about it.
Shipping details
Estimated ship dimensions: 8.39 inches length x 6.66 inches width x 2.72 inches height
Estimated ship weight: 0.474 pounds
Return details
This item can be returned to any Target store or Target.com.
This item must be returned within 90 days of the date it was purchased in store, shipped, delivered by a Shipt shopper, or made ready for pickup.
See the return policy for complete information.
Q: Will this carbon monoxide detector work even if battery is out?
submitted by Bubba - 6 years ago
A: Thank you for your question. This is a battery powered unit that will not function without batteries.
submitted byFirstAlertProductExpert - 3 years agoBrand expertA: No. It has to have 9v in it
submitted by - 4 years ago
Q: Can it sit on a table?
submitted by Kathy rieth - 5 months ago
A: Yes. It can stand up on its own (although not the most stable if on a place that gets bumped or moved)
submitted byJumpman23 - 22 days ago
Q: Does this CO detector have a LED to show it is powered up with battery ?
submitted by Phantom of darkness - 1 year ago
A: No, you have to press the Test button.
submitted byRudolph - 1 year ago
Q: what is the lowest amt it will detect?
submitted by Cilla - 2 years ago
A: Thank you for your question. If the alarm is exposed to 400 ppm of CO, It must alarm between 4 and 15 minutes. If you have any additional questions, please don't hesitate to reach out directly to our Support Team at First Alert at at 1 (800)-323-9005.
submitted byFirstAlertProductExpert - 2 years agoBrand expert
Q: Does it works when ice fishing in tents?
submitted by allaboutevecapricorn - 3 years ago
A: Thank you for your question. We recommend not placing in areas where temperature is colder than 40˚ F (4˚ C) or hotter than 100˚ F(38˚ C).
submitted byFirstAlertProductExpert - 3 years agoBrand expert
Q: What size batteries does it take?
submitted by Tina R - 5 years ago
A: This particular model takes 9 volt
submitted by - 4 years ago
Q: How does this attach to the wall?
submitted by JH - 6 years ago
A: Two screws in the wall and it slides onto them
submitted by - 4 years ago
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4.2 out of 5 stars with 168 reviews
value: 3.81 out of 5
quality: 3.58 out of 5
78% would recommend
51 recommendations
Terrible design
1 out of 5 stars
Thumbs down graphic, would not recommend
olive - 2 months ago, Verified purchaser
Cannot get the battery door open!! Seriously BAD design! Back it goes
Does not last long!
1 out of 5 stars
Thumbs down graphic, would not recommend
SomeoneWhoFeelsBetter - 3 months ago, Verified purchaser
Purchased in March 2024 stopped working October 2024 what a scam
Stopped Workomg
1 out of 5 stars
Thumbs down graphic, would not recommend
BeckyJ - 5 months ago
Bought in March 2023 and stopped working Aug 2024.
Really great for the price!
5 out of 5 stars
Thumbs up graphic, would recommend
SNB - 6 months ago, Verified purchaser
It was really easy to put together and there was a battery included. I live in an apartment and wanted extra assurance that I'm safe. Also super easy to put up!
Good brand. Good price.
5 out of 5 stars
Thumbs up graphic, would recommend
shel - 9 months ago, Verified purchaser
Perfect replacement for our previous CO detector that died after 7 years.
Didnt Alert to Gas Leak
1 out of 5 stars
Thumbs down graphic, would not recommend
Maggie - 9 months ago, Verified purchaser
Didn’t catch a gas leak in our kitchen. Would not recommend
Great alarm
5 out of 5 stars
Thumbs up graphic, would recommend
Nana w - 1 year ago, Verified purchaser
The price was right. The alarm has a nice profile.
Difficult to Set Up
1 out of 5 stars
Thumbs down graphic, would not recommend
AS - 1 year ago
The battery door is impossible to open. It should not be this inconvenient to even set up.
Buy it
5 out of 5 stars
Thumbs up graphic, would recommend
Ciara - 1 year ago
Bought this after a scare! Everyone needs one of these in their home
Garbage - Didn't work
1 out of 5 stars
Thumbs down graphic, would not recommend
dougc - 2 years ago
Don't buy this garbage. Didn't work stright out of the package!
1 reply from FirstAlertProductExpert team - 2 years ago
Thank you for your feedback, Doug. We apologize for any inconvenience. This detector comes with a 7-year warranty. We would like to talk to you about how we can help. Please don’t hesitate to reach out to us at First Alert at 1 (800)-323-9005 to further trouble shoot or replace the unit.
Battery door hard to open & super loud
2 out of 5 stars
Thumbs down graphic, would not recommend
McAwesome - 2 years ago
The battery door was nearly impossible to open. The instructions say to press the test button after installing battery and the “chirp” was so loud I lost my hearing for an hour.
1 reply from FirstAlertProductExpert team - 2 years ago
Thank you for your feedback. We apologize for any inconvenience. We’re here to help. We would like to talk to you further to better understand your experience. Please don’t hesitate to reach out to us at First Alert at 1 (800)-323-9005.
Carbon monoxide detector
4 out of 5 stars
Thumbs up graphic, would recommend
Carbon monoxide akarm - 2 years ago, Verified purchaser
good quality and it was in stock when I needed it.
Good!
5 out of 5 stars
Thumbs up graphic, would recommend
suzybluiis - 2 years ago
This was the exact replacement and came with the battery, so it was very easy to put up quickly.
Easy to use
5 out of 5 stars
Thumbs up graphic, would recommend
Annie57 - 2 years ago, Verified purchaser
Battery operated and easy to relocate as needed.
2015-2022
5 out of 5 stars
Agnn - 3 years ago
Just wanted to post regarding the life of the unit. It started chirping 5 times the other night. I got it a new battery and same thing. The back states that 5 chirps means end of product life, so that feature works. Product is marked 2/2015 and it chirped a few days ago and I think had a battery in it the majority of that time. No issues with it while it was working. I couldn’t even say if I changed the battery on it (which is also a feature) so it isn’t a battery-sucker.
Works well
4 out of 5 stars
Thumbs up graphic, would recommend
DetroitDi - 3 years ago, Verified purchaser
Alerted me when I didnt expect it to go off. And it was justified.
Nice and small.
5 out of 5 stars
Thumbs up graphic, would recommend
good buy - 3 years ago, Verified purchaser
Needed to replace an old CO detector and saw this one online. Hope it's as reliable as my old one.
Does not work
1 out of 5 stars
Thumbs down graphic, would not recommend
Savoy26 - 3 years ago, Verified purchaser
Only works if you hold the battery in tightly by hand.
1 reply from FirstAlertProductExpert team - 3 years ago
Thank you for your feedback. We apologize for any inconvenience. We’re here to help. We would like to talk to you further to better understand your experience. Please don’t hesitate to reach out to us at First Alert at 1 (800)-323-9005. We look forward to hearing from you.
Great, but wish they still used AA batteries!
5 out of 5 stars
fischnet - 3 years ago, Verified purchaser
Purchased to replace same units from 8 years ago. Always reliable, but wish they still used always cheaper and always on hand, AA batteries instead of 9 v.
Proctoer
5 out of 5 stars
Thumbs up graphic, would recommend
Shatta - 3 years ago
Noting it works well